Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos comentaristas de televisão havia na final do campeonato em 1961?
 ###Tabelas: CREATE TABLE most_appearances (most_appearances_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Period VARCHAR, League INT, Concacaf INT, Libertadores INT, Merconorte INT, InterLiga INT, Superliga INT, Matches INT) CREATE TABLE philadelphia_phillies_vs._los_angeles_dodgers (philadelphia_phillies_vs._los_angeles_dodgers_id AUTO_INCREMENT PRIMARY KEY, Game INT, Date VARCHAR, Score VARCHAR, Location VARCHAR, Time VARCHAR, Attendance INT) CREATE TABLE singles_finals_13_5-8 (singles_finals_13_5-8_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date INT, Championship VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR) CREATE TABLE commentators_and_spokespersons (commentators_and_spokespersons_id AUTO_INCREMENT PRIMARY KEY, Year(s) INT, Grand Final Television Commentator VARCHAR, Grand Final Dual Television Commentator VARCHAR, Spokesperson VARCHAR, Semi Final Television Commentator VARCHAR, Semi Final Dual Television Commentator VARCHAR) CREATE TABLE finals_appearances (finals_appearances_id AUTO_INCREMENT PRIMARY KEY, Finals INT, Team VARCHAR, Wins INT, Losses INT, Pct. INT)  
SELECT COUNT Grand Final Dual Television Commentator FROM commentators_and_spokespersons WHERE Year(s) = 1961